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ARS Home » Plains Area » Lincoln, Nebraska » Wheat, Sorghum and Forage Research » Research » Publications at this Location » Publication #147418
Title: VARIATION AMONG ISOLATES OF PEPPER GOLDEN MOSAIC VIRUS SUGGESTS A BEGOMOVIRUS SPECIES COMPLEX

Author
item IDRIS, A - UNI OF ARIZONA
item BROWN, T - UNI OF ARIZONA
item French, Roy
item Stenger, Drake

Submitted to: American Phytopathological Society Annual Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 3/20/2003
Publication Date: 7/1/2003
Citation: Idris, A.M., Brown, T.K., French, R.C., Stenger, D.C. 2003. Variation among isolates of pepper golden mosaic virus suggests a begomovirus species complex. American Phytopathological Society Annual Meeting. Phytopathology 93 (supplement):538

Interpretive Summary:

Technical Abstract: Three isolates of Pepper golden mosaic virus (PepGMV) differ in symptom expression on pepper: PepGMV-Sinaloa (S; formerly SGMV) caused bright golden mosaic, PepGMV-Mosaic (Mo) caused yellow-green mosaic, and PepGMV-Distortion (D) caused mild mosaic and foliar distortion. The bipartite genome of each isolate was sequenced and compared to two other PepGMV isolates (-Tam and -CR). Nt sequence identity for the five isolates ranged between 92.2-96.0% (DNA-A) and 87.6-99.6 (DNA-B). Cloned DNA-A and DNA-B components of PepGMV-S, -Mo, and -D were infectious by biolistic inoculation to pepper, and each isolate¿s distinct symptom phenotype was reproduced. PepGMV-S and -Mo were transmissible between pepper and tomato by Bemisia tabaci biotype B whereas, PepGMV-D was not. However, PepGMV-D DNA-A was whitefly transmissible when co-inoculated to pepper with either DNA-B of PepGMV-S or -Mo. These results indicate that PepGMV exhibits significant variation in both genotype and phenotype, such that PepGMV may be viewed as a species complex.